EP2910519A1 - Water server - Google Patents
Water server Download PDFInfo
- Publication number
- EP2910519A1 EP2910519A1 EP13849608.8A EP13849608A EP2910519A1 EP 2910519 A1 EP2910519 A1 EP 2910519A1 EP 13849608 A EP13849608 A EP 13849608A EP 2910519 A1 EP2910519 A1 EP 2910519A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- head
- container
- raw water
- water
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/0029—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with holders for bottles or similar containers
- B67D3/0032—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with holders for bottles or similar containers the bottle or container being held upside down and provided with a closure, e.g. a cap, adapted to cooperate with a feed tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/0009—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with cooling arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/0038—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes the liquid being stored in an intermediate container prior to dispensing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/0058—Details
- B67D3/0061—Details of liquid containers, e.g. filling, emptying, closing or opening means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/0058—Details
- B67D3/008—Supports
- B67D3/0083—Supports for the liquid container
Definitions
- the present invention relates to a water dispenser which is capable of discharging water supplied from a replaceable raw water container and stored in a temporary water storage tank, as drinking water.
- Such water dispensers are configured to discharge temperature-adjusted water stored in a temporary water storage tank through a water discharge line into e.g. a user's cup when a lever or a cock is operated by the user.
- a raw water container is located at a higher level or a lower level than the temporary water storage tank.
- Such water dispensers also include a casing in which are provided, besides the temporary water storage tank and the water discharge line, a container holder on which a raw water container is configured to be placed, and a water supply line through which raw water in the raw water container is fed into the temporary water storage tank (as disclosed in the below-identified Patent documents 1 and 2).
- a conventional raw water container includes a plug comprising a plug body fixed to the container body, and a valve body for closing a valve hole formed in the plug body.
- the casing of the water dispenser is provided with a pierced rod for pushing the valve body closing the valve hole of the plug body into the raw water container.
- the pierced rod is formed with a raw water intake port through which raw water is introduced into the water supply line.
- the valve body includes a peripheral wall portion which can be press-fitted in the inner periphery of the valve hole, and a claw portion protruding from the peripheral wall portion over the entire circumference thereof.
- the head of the pierced rod pushes the claw portion over the entire circumference thereof, thus elastically deforming the claw portion in such a manner that the claw portion is pushed away from the head.
- the claw portion is hooked to the head over the entire circumference thereof, due to elastic recovery of the claw portion.
- the valve body is continuously pushed by the pierced rod thereafter, the pierced rod is brought into close contact with the inner periphery of the valve hole, while pushing the valve body out of the valve hole, thereby separating the valve body from the plug body, until the raw water intake port moves into the raw water container.
- the peripheral wall portion of the valve body is fitted into the inner periphery of the valve hole, while the pierced rod is pulled out of the valve hole, until the valve body gets caught on the plug body.
- the valve body is separated from the pierced rod.
- the head of the pierced rod pushes the claw portion of the valve body, the head is brought into close contact with the claw portion over the entire circumference of the claw portion, thus trapping atmospheric air in the space defined by the peripheral wall portion of the valve body.
- the head is pushed into the space defined by the peripheral wall portion while compressing air trapped therein, just like a piston.
- the trapped air thus makes advancement of the head difficult. This increases the possibility of the valve body separating from the plug body with the head not advanced until the claw portion is hooked to the head, due e.g. to dimensional errors of the raw water container.
- An object of the present invention is to make it easier to hook the claw portion of the valve body to the head of the pierced rod when a new raw water container is connected to the water supply line of the water dispenser.
- the present invention provides a water dispenser comprising a casing, a temporary water storage tank provided in the casing, a container holder provided in the casing and on which a replaceable raw water container can be placed, a water supply line provided in the casing and through which raw water can be supplied from the raw water container into the temporary water storage tank, and a pierced rod provided in the casing and formed with a raw water intake port through which raw water can be fed into the raw water supply line
- the raw water container comprises a container body and a plug, the plug comprising a plug body fixed to the container body and formed with a valve hole, and a valve body capable of closing the valve hole
- the valve body includes a peripheral wall portion configured to be press-fitted into the inner periphery of the valve hole, and a claw portion protruding from the peripheral wall portion over the entire circumference of the peripheral wall portion
- the pierced rod has a head
- the water dispenser is configured: such that when the head is
- the present invention while the head is being pushed into the space defined by the peripheral wall portion, it is possible to release atmospheric air in the above space into the pierced rod through the above-described through hole, namely, the through hole formed in a portion of the head closer to the distal end of the head than is the portion of the head configured to contact and push the claw portion.
- the object of the present invention namely, the object of making it easier to hook the claw portion of the valve body to the head of the pierced rod when a new raw water container is connected to the water supply line of the water dispenser.
- this water dispenser includes temporary water storage tanks 10, a container holder 30 in which a replaceable raw water container 20 is placed, and a water supply line 40 through which raw water is supplied from the raw water container 20 to the temporary water storage tanks 10, a pierced rod 50 formed with a raw water intake port 41 of the water supply line 40, water discharge lines 60 through which water in the temporary water storage tanks 10 is discharged to the outside, and air intake line 70 through which the interior of the raw water container 20 communicates with the atmosphere.
- These elements are all disposed in a casing 100.
- the casing 100 is a machine casing having a bottom portion placed on a horizontal surface.
- the casing 100 includes a slide table 101 which can be pulled forward out of a loading space located below the temporary water storage tanks 10.
- the slide table 101 is slidable in a horizontal direction in a straight line along guide rails laid on a bottom plate of the casing 100.
- the directions in which the slide table is slid into and out of the loading space correspond to the backward and forward directions of the water dispenser, respectively.
- the container holder 30 and the pierced rod 50 are provided on the slide table 101.
- the temporary water storage tanks 10 comprise tanks each provided with means for adjusting the temperature of water stored in the corresponding tank.
- the temporary water storage tanks 10 comprise a cold water tank 11 provided with a heat exchanger for cooling water stored in the cold water tank 11, and a hot water tank 12 provided with a heater for heating water stored in the hot water tank 12.
- the water dispenser further includes a water transfer line 13, of which the inlet is formed in a baffle plate configured to interfere with the downward flow of raw water fed from the water supply line 40. With this arrangement, water stored in the upper portion of the cold water tank 11 can flow into the hot water tank 12 through the water transfer line 13. One of the cold water tank and the hot water tank may be omitted.
- the water discharge lines 60 as the outlet lines of the temporary water storage tanks 10, comprise a cold water discharge line 61 connected to the cold water tank 11, and a hot water discharge line 62 connected to the hot water tank 12, independently of the cold water discharge line 61.
- Valves are provided at the respective boundaries between the cold water tank and the cold water discharge line 61 and between the hot water tank and the hot water discharge line 62 such that when a user opens either one of the valves, water stored in the lower portion of the cold water tank 11 or water in the upper portion of the hot water tank 12 flows through the cold water discharge line or the hot water discharge line, and can be discharged into e.g. a cup.
- the raw water container 2 includes a container body 21 having a neck portion and a shoulder portion, and a plug 22 sealing the neck portion of the container body 21.
- the container body 21 is a variable-volume transparent member configured such that its peripheral wall portion located higher than the shoulder portion is spontaneously collapsible when the water remaining in the container body 21 decreases.
- Raw water is introduced into the container body 21 through its mouth defined by the inner periphery of the neck portion until the container is filled with water, and kept in the container by fitting the plug 22 onto the neck portion. With the container body 21 set upside down (its bottom at the highest level), the shoulder of the container body 21 is supported by the container holder 30 from below, until the raw water container 20 becomes practically empty.
- the shoulder portion of the container body 21 is inclined such that raw water collects into the neck portion.
- the neck portion is a tubular member protruding from the shoulder portion and having a vertical axis, with the inner and outer diameters thereof not larger than the minimum inner and outer diameters of the shoulder portion.
- the container holder 30 includes a seating surface forming portion 31 for receiving the shoulder portion of the container body 21 from below, a cup portion 32 recessed from the seating surface forming portion 31, and an enclosure portion 33 integrally connected to the outer edge of the seating surface forming portion 31.
- the seating surface forming portion 31 supports the weight of raw water container 20 from below.
- the cup portion 32 is recessed downward from the seating surface forming portion 31 to such a depth and within such a horizontal positional range that the neck portion of the container body 21 can be inserted into the cup portion 32 from above.
- the cup portion 32 is configured such that water leaking out of the raw water container 20 is received in the cup portion 32.
- the enclosure portion 33 is configured to downwardly guide the peripheral wall portion of the container body 21 when the container body 21 is collapsed spontaneously. By pulling the slide table 101 forward, the container holder 30 and everything placed on the holder 30 can be pulled out of the casing 100. If a raw water container is used which is rigid enough not to be collapsible spontaneously, the enclosure portion 33 is not necessary.
- the plug 22 includes a plug body 23 fixed to the neck portion of the container body 21, and a valve body 25 configured to close a valve hole 24 formed in the plug body 23.
- the inner periphery of the valve hole 24 and the outer periphery of the valve body 25 have circular horizontal cross-sections.
- the valve hole 24 and the valve body 25 have a common vertically extending center axis.
- the valve body 25 includes a peripheral wall portion 26 which can be press-fitted into the inner periphery of the valve hole 24 in the axial direction, and a claw portion 27 provided over the entire circumference of the peripheral wall portion 26 to extend in the radial direction.
- the inner periphery of the valve hole 24 is stepped to form a small-diameter inner peripheral portion 24a having a smaller inner diameter than the remaining portion of the inner periphery of the valve hole 24.
- the outer periphery of the peripheral wall portion 26 is stepped to form a large-diameter outer peripheral portion 26a having a larger outer diameter than the remaining portion of the outer periphery of the peripheral wall portion 26.
- the large-diameter outer peripheral portion 26a of the peripheral wall portion 26 is configured to get caught on the small-diameter inner peripheral portion 24a of the valve hole 24 in the axial direction, thereby preventing separation of the valve body 25 in the axial direction toward the interior of the container.
- the valve body 25 has a flange portion 28 having an outer diameter larger than the diameter of the inner periphery of the valve hole 24.
- the flange portion 28 is configured to get caught on the open edge of the valve hole 24 facing the interior of the container in the axial direction, thereby preventing separation of the valve body 25 in the axial direction toward the outside of the container.
- a gap having a wedge-shaped section and open to the outside of the container is defined between the outer peripheral portion 26a and the large-diameter inner peripheral portion 24b of the valve hole 24 having a larger inner diameter than the inner peripheral portion 24a.
- the outer periphery of the peripheral wall portion 26 is pressed against the inner periphery of the valve hole 24 at its portion between the wedge-shaped gap and the stepped portion.
- the wedge-shaped gap makes it easier for the outer peripheral portion 26a to be radially outwardly deformed at its portion close to the claw portion 27.
- the pierced rod 50 when the pierced rod 50 is inserted in the cup portion 32, the pierced rod 50 extends vertically so as to be located, in plan view, at the common geometric center of the seating surface forming portion 31, which is annular in shape, and the enclosure portion 33.
- the pierced rod 50 includes a head 51 having a convex curved surface and capable of pushing the claw portion 27 uniformly over the entire circumference thereof, in the axial direction.
- the pierced rod 50 further includes a neck portion 52 having a smaller diameter than the base of the head 51 to define a circumferential groove in which the claw portion 27 is engageable, and a cylindrical trunk portion 53 extending from the neck portion 52 and having an outer diameter larger than the maximum inner diameter of the valve hole 24.
- the interior of the pierced rod 50 is divided into one end portion of the water supply line 40 and one end portion of the air intake line 70.
- the trunk portion 53 is formed with a raw water intake port 41 through which raw water in the container body 21 is introduced into the water supply line 40.
- the pierced rod 50 is further formed with an air hole (not shown) through which air in the air intake line 70 is introduced into the container body 21.
- a through hole 54 is formed in the head 51 so as to communicate with the water supply line 40 in the pierced rod 50.
- the through hole 54 opens at the apex of the head 51.
- the water supply line 40 includes a connecting pipe 42 having one end thereof connected to the portion of the water supply line 40 in the pierced rod 50.
- the air intake line 70 includes a connecting pipe 71 having one end thereof connected to the portion of the air intake line 70 in the pierced rod 50.
- the connecting pipes 42 and 71 are soft and flexible pipes that are deformable following the movement of the slide table 101 when the slide table 101 is pulled into and out of the housing.
- a pump 43 for drawing up water is provided at an intermediate portion of the water supply line 40.
- the air intake line 70 always communicates with the atmosphere through an air chamber 72 and with the interior of the container body 21 so that air can be introduced into the container body 21 through the air intake line 70.
- the air chamber 72 is preferably provided with a filter for removing contaminants in the atmosphere, such as dust, odor and bacteria.
- the raw water container 20 is lowered into the space surrounded by the enclosure portion 33. While the container is being lowered and before the shoulder portion of the container body 21 contacts the seating surface forming portion 31, the enclosure portion 33 guides the peripheral wall portion of the container body 21 so as to move the raw water container 20 to a position in the air where the pierced rod 50 can be inserted into the valve hole 24 in the axial direction.
- the head 51 contacts the claw portion 27, as shown in Fig.
- the trunk portion 53 is partially fitted to the large-diameter inner peripheral portion 24b of the valve hole 24, and the head 51 is inserted, to its axially intermediate portion, into the peripheral wall portion 26.
- the pierced rod 50 is further deeply and axially inserted into the container 20 with the pierced rod 50 and the inner peripheral portion 24b axially moved and guided relative to each other. This causes the claw portion 27 to be pushed in the axial direction by the head 51 of the pierced rod 50 over the entire circumference of the claw portion 27.
- the peripheral wall portion 26 is continuously pressed by the shoulder of the trunk portion 53 in the axial direction. Since the stepped surfaces where the inner peripheral portion 24a and the outer peripheral portion 26a are caught on each other are slightly inclined, when the peripheral wall portion 26 is pressed by the shoulder of the trunk portion 53 in the axial direction, the inner peripheral portion 24a is also pushed radially outwardly by the outer peripheral portion 26a, whereby the outer peripheral portion 26a disengages from the inner peripheral portion.
- the shoulder of the trunk portion 53 keeps pressing the valve body 25 in the axial direction, thereby disconnecting the valve body 25 from the plug body 23, until the raw water intake port 41 is moved into the container body 21.
- the raw water container 20 has become practically empty when the water level in the container body 21 decreases to a level lower than the raw water intake port 41. That is, when the raw water container 20 becomes practically empty, a small amount of water still remains in the container.
- the practically empty raw water container 20 is raised, and the pierced rod 50 is pulled out of the plug body 23, since the claw portion 27 remains caught on the head 51, the peripheral wall portion 26 of the valve body 25 is fitted, taking the place of the trunk portion 53, into the inner peripheral portion 24a while radially expanding the inner peripheral portion 24a with the outer peripheral portion 26a .
- valve body 25 When the container is further raised after the flange portion 28 has axially engaged the open edge of the valve hole 24 facing the interior of the container, the valve body 25 is disconnected from the pierced rod 50 as shown in Fig. 6 .
- the valve hole 24 is spontaneously closed by the valve body 25, so that it is possible to automatically prevent leakage of water remaining in the raw water container 20 simply by raising the container.
- the water level in the water supply line 40 is below the raw water intake port 41 before a new raw water container 20 is connected to the water supply line 40, so that the raw water intake port 41, which is formed in the trunk portion 53, is located outside of the raw water container 20 and communicates with the ambient atmosphere while the head 51 is sliding on the claw portion 27.
- this water dispenser when a new raw water container 20 is connected to the water supply line 40, more specifically, when the head 51 is pushing the claw portion 27, the head 51 can be pushed in while allowing atmospheric air in the space defined by the peripheral wall portion 26 to be released into the pierced rod 50 through the through hole 54, and thus without substantially compressing atmospheric air in the space defined by the peripheral wall portion 26. This makes it easier to hook the claw portion 27 on the head 51.
- the through hole 54 may be open not at the apex, i.e. the distal end, of the head 51, but at any portion of its surface closer to the distal end of the head 51 than is the portion of the head 51 which contacts and pushes the claw portion 27 in the axial direction, namely, at any portion of its surface located at a higher level, in Fig. 1(a) , than the contact portion between the head 51 and the claw portion 27.
- the present invention is not limited to the above-described embodiment but encompasses every modification thereof which is within the scope of the claims.
- the present invention encompasses an arrangement in which the pierced rod is movable as in Patent document 2, and a water dispenser in which the raw water container is placed on a container holder fixed in position at the upper portion of the housing so that water is supplied through the water supply line under gravity, as disclosed in Patent document 1.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Dispensing Beverages (AREA)
- Closures For Containers (AREA)
Abstract
Description
- The present invention relates to a water dispenser which is capable of discharging water supplied from a replaceable raw water container and stored in a temporary water storage tank, as drinking water.
- Such water dispensers are configured to discharge temperature-adjusted water stored in a temporary water storage tank through a water discharge line into e.g. a user's cup when a lever or a cock is operated by the user. A raw water container is located at a higher level or a lower level than the temporary water storage tank. Such water dispensers also include a casing in which are provided, besides the temporary water storage tank and the water discharge line, a container holder on which a raw water container is configured to be placed, and a water supply line through which raw water in the raw water container is fed into the temporary water storage tank (as disclosed in the below-identified
Patent documents 1 and 2). - A conventional raw water container includes a plug comprising a plug body fixed to the container body, and a valve body for closing a valve hole formed in the plug body. The casing of the water dispenser is provided with a pierced rod for pushing the valve body closing the valve hole of the plug body into the raw water container. The pierced rod is formed with a raw water intake port through which raw water is introduced into the water supply line. The valve body includes a peripheral wall portion which can be press-fitted in the inner periphery of the valve hole, and a claw portion protruding from the peripheral wall portion over the entire circumference thereof. When a new raw water container is connected to the water supply line of the water dispenser, the head of the pierced rod pushes the claw portion over the entire circumference thereof, thus elastically deforming the claw portion in such a manner that the claw portion is pushed away from the head. When the head moves past the claw portion, the claw portion is hooked to the head over the entire circumference thereof, due to elastic recovery of the claw portion. When the valve body is continuously pushed by the pierced rod thereafter, the pierced rod is brought into close contact with the inner periphery of the valve hole, while pushing the valve body out of the valve hole, thereby separating the valve body from the plug body, until the raw water intake port moves into the raw water container. When the pierced rod is pulled out of the plug body, the peripheral wall portion of the valve body is fitted into the inner periphery of the valve hole, while the pierced rod is pulled out of the valve hole, until the valve body gets caught on the plug body. When the pierced rod is further pulled out of the plug body, the valve body is separated from the pierced rod. Thus, when the pierced rod is pulled out of the plug body, the valve hole is spontaneously closed by the valve body, so that it is possible to automatically prevent leakage of water remaining in the raw water container simply by raising the container.
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- Patent document 1:
JP Patent Publication 2010-228807A - Patent document 2:
JP Patent 4802299B - When the head of the pierced rod pushes the claw portion of the valve body, the head is brought into close contact with the claw portion over the entire circumference of the claw portion, thus trapping atmospheric air in the space defined by the peripheral wall portion of the valve body. Thus, the head is pushed into the space defined by the peripheral wall portion while compressing air trapped therein, just like a piston. The trapped air thus makes advancement of the head difficult. This increases the possibility of the valve body separating from the plug body with the head not advanced until the claw portion is hooked to the head, due e.g. to dimensional errors of the raw water container.
- An object of the present invention is to make it easier to hook the claw portion of the valve body to the head of the pierced rod when a new raw water container is connected to the water supply line of the water dispenser.
- In order to achieve this object, the present invention provides a water dispenser comprising a casing, a temporary water storage tank provided in the casing, a container holder provided in the casing and on which a replaceable raw water container can be placed, a water supply line provided in the casing and through which raw water can be supplied from the raw water container into the temporary water storage tank, and a pierced rod provided in the casing and formed with a raw water intake port through which raw water can be fed into the raw water supply line, wherein the raw water container comprises a container body and a plug, the plug comprising a plug body fixed to the container body and formed with a valve hole, and a valve body capable of closing the valve hole, wherein the valve body includes a peripheral wall portion configured to be press-fitted into the inner periphery of the valve hole, and a claw portion protruding from the peripheral wall portion over the entire circumference of the peripheral wall portion, wherein the pierced rod has a head, wherein the water dispenser is configured: such that when the head is pushed into the plug body, the head pushes the claw portion of the valve body over the entire circumference of the claw portion until the claw portion gets caught on the head over the entire circumference of the claw portion, and thereafter, the pierced rod is brought into close contact with the inner periphery of the valve hole while pushing the valve body out of the valve hole until the valve body is separated from the plug body; and such that when the pierced rod is pulled out of the plug body, the peripheral wall portion is fitted into the inner periphery of the valve hole while the pierced rod is pulled out of the valve hole until the valve body gets caught on the plug body, and thereafter, the valve body is separated from the pierced rod, and wherein a through hole is formed in a portion of the head closer to the distal end of the head than is the portion of the head configured to contact and push the claw portion such that atmospheric air in the space defined by the peripheral wall portion is released into the pierced rod through the through hole.
- With the arrangement of the present invention, while the head is being pushed into the space defined by the peripheral wall portion, it is possible to release atmospheric air in the above space into the pierced rod through the above-described through hole, namely, the through hole formed in a portion of the head closer to the distal end of the head than is the portion of the head configured to contact and push the claw portion. This prevents the atmospheric air in the above space from being compressed by the head, which in turn makes it easier for the head to advance in the space defined by the peripheral wall. As a result, it is possible to achieve the object of the present invention, namely, the object of making it easier to hook the claw portion of the valve body to the head of the pierced rod when a new raw water container is connected to the water supply line of the water dispenser.
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Fig. 1(a) is a partial sectional view of an embodiment of the present invention, showing the moment when a pierced rod pushes a valve body; andFig. 1(b) is a partial sectional view of the embodiment, showing how the pierced rod is further pushed into the valve body from the state ofFig. 1(a) . -
Fig. 2 schematically shows an entire water dispenser embodying the present invention. -
Fig. 3 is a side view of the embodiment, showing how a raw water container is placed in position. -
Fig. 4 is plan view of the embodiment, showing how the raw water container is placed on a container holder. -
Fig. 5 is a partial sectional view of the embodiment, showing the pierced rod and the surrounding area when the raw water container is placed on the container holder. -
Fig. 6 is a partial sectional view of the embodiment, showing the pierced rod and the surrounding area while the raw water container is being moved toward the position ofFig. 5 . - A water dispenser embodying the present invention is now described with reference to the drawings. As shown in
Fig. 2 , this water dispenser includes temporarywater storage tanks 10, acontainer holder 30 in which a replaceableraw water container 20 is placed, and awater supply line 40 through which raw water is supplied from theraw water container 20 to the temporarywater storage tanks 10, a piercedrod 50 formed with a rawwater intake port 41 of thewater supply line 40,water discharge lines 60 through which water in the temporarywater storage tanks 10 is discharged to the outside, andair intake line 70 through which the interior of theraw water container 20 communicates with the atmosphere. These elements are all disposed in acasing 100. - The
casing 100 is a machine casing having a bottom portion placed on a horizontal surface. As shown inFigs. 2 and3 , thecasing 100 includes a slide table 101 which can be pulled forward out of a loading space located below the temporarywater storage tanks 10. As shown inFigs. 3 and4 , the slide table 101 is slidable in a horizontal direction in a straight line along guide rails laid on a bottom plate of thecasing 100. The directions in which the slide table is slid into and out of the loading space correspond to the backward and forward directions of the water dispenser, respectively. Thecontainer holder 30 and the piercedrod 50 are provided on the slide table 101. - As shown in
Fig. 2 , the temporarywater storage tanks 10 comprise tanks each provided with means for adjusting the temperature of water stored in the corresponding tank. In particular, the temporarywater storage tanks 10 comprise acold water tank 11 provided with a heat exchanger for cooling water stored in thecold water tank 11, and ahot water tank 12 provided with a heater for heating water stored in thehot water tank 12. The water dispenser further includes awater transfer line 13, of which the inlet is formed in a baffle plate configured to interfere with the downward flow of raw water fed from thewater supply line 40. With this arrangement, water stored in the upper portion of thecold water tank 11 can flow into thehot water tank 12 through thewater transfer line 13. One of the cold water tank and the hot water tank may be omitted. - The
water discharge lines 60, as the outlet lines of the temporarywater storage tanks 10, comprise a coldwater discharge line 61 connected to thecold water tank 11, and a hotwater discharge line 62 connected to thehot water tank 12, independently of the coldwater discharge line 61. Valves are provided at the respective boundaries between the cold water tank and the coldwater discharge line 61 and between the hot water tank and the hotwater discharge line 62 such that when a user opens either one of the valves, water stored in the lower portion of thecold water tank 11 or water in the upper portion of thehot water tank 12 flows through the cold water discharge line or the hot water discharge line, and can be discharged into e.g. a cup. - As shown in
Fig. 3 , theraw water container 2 includes acontainer body 21 having a neck portion and a shoulder portion, and aplug 22 sealing the neck portion of thecontainer body 21. Thecontainer body 21 is a variable-volume transparent member configured such that its peripheral wall portion located higher than the shoulder portion is spontaneously collapsible when the water remaining in thecontainer body 21 decreases. Raw water is introduced into thecontainer body 21 through its mouth defined by the inner periphery of the neck portion until the container is filled with water, and kept in the container by fitting theplug 22 onto the neck portion. With thecontainer body 21 set upside down (its bottom at the highest level), the shoulder of thecontainer body 21 is supported by thecontainer holder 30 from below, until theraw water container 20 becomes practically empty. The shoulder portion of thecontainer body 21 is inclined such that raw water collects into the neck portion. In order to minimize the amount of water remaining in the neck portion of thecontainer body 21 and to allow theplug 22 to be pressed vertically onto the neck portion, the neck portion is a tubular member protruding from the shoulder portion and having a vertical axis, with the inner and outer diameters thereof not larger than the minimum inner and outer diameters of the shoulder portion. - As shown in
Figs. 4 and5 , thecontainer holder 30 includes a seatingsurface forming portion 31 for receiving the shoulder portion of thecontainer body 21 from below, acup portion 32 recessed from the seatingsurface forming portion 31, and anenclosure portion 33 integrally connected to the outer edge of the seatingsurface forming portion 31. The seatingsurface forming portion 31 supports the weight ofraw water container 20 from below. Thecup portion 32 is recessed downward from the seatingsurface forming portion 31 to such a depth and within such a horizontal positional range that the neck portion of thecontainer body 21 can be inserted into thecup portion 32 from above. Thecup portion 32 is configured such that water leaking out of theraw water container 20 is received in thecup portion 32. Theenclosure portion 33 is configured to downwardly guide the peripheral wall portion of thecontainer body 21 when thecontainer body 21 is collapsed spontaneously. By pulling the slide table 101 forward, thecontainer holder 30 and everything placed on theholder 30 can be pulled out of thecasing 100. If a raw water container is used which is rigid enough not to be collapsible spontaneously, theenclosure portion 33 is not necessary. - As shown in
Figs. 3 and6 , theplug 22 includes aplug body 23 fixed to the neck portion of thecontainer body 21, and avalve body 25 configured to close avalve hole 24 formed in theplug body 23. The inner periphery of thevalve hole 24 and the outer periphery of thevalve body 25 have circular horizontal cross-sections. Thevalve hole 24 and thevalve body 25 have a common vertically extending center axis. (The direction of this center axis is hereinafter referred to as the "axial direction" and every direction perpendicular to the center axis is referred to as a "radial direction".) Thevalve body 25 includes aperipheral wall portion 26 which can be press-fitted into the inner periphery of thevalve hole 24 in the axial direction, and aclaw portion 27 provided over the entire circumference of theperipheral wall portion 26 to extend in the radial direction. The inner periphery of thevalve hole 24 is stepped to form a small-diameter innerperipheral portion 24a having a smaller inner diameter than the remaining portion of the inner periphery of thevalve hole 24. The outer periphery of theperipheral wall portion 26 is stepped to form a large-diameter outerperipheral portion 26a having a larger outer diameter than the remaining portion of the outer periphery of theperipheral wall portion 26. The large-diameter outerperipheral portion 26a of theperipheral wall portion 26 is configured to get caught on the small-diameter innerperipheral portion 24a of thevalve hole 24 in the axial direction, thereby preventing separation of thevalve body 25 in the axial direction toward the interior of the container. Thevalve body 25 has aflange portion 28 having an outer diameter larger than the diameter of the inner periphery of thevalve hole 24. Theflange portion 28 is configured to get caught on the open edge of thevalve hole 24 facing the interior of the container in the axial direction, thereby preventing separation of thevalve body 25 in the axial direction toward the outside of the container. A gap having a wedge-shaped section and open to the outside of the container is defined between the outerperipheral portion 26a and the large-diameter innerperipheral portion 24b of thevalve hole 24 having a larger inner diameter than the innerperipheral portion 24a. The outer periphery of theperipheral wall portion 26 is pressed against the inner periphery of thevalve hole 24 at its portion between the wedge-shaped gap and the stepped portion. The wedge-shaped gap makes it easier for the outerperipheral portion 26a to be radially outwardly deformed at its portion close to theclaw portion 27. - As shown in
Fig. 4 , when thepierced rod 50 is inserted in thecup portion 32, thepierced rod 50 extends vertically so as to be located, in plan view, at the common geometric center of the seatingsurface forming portion 31, which is annular in shape, and theenclosure portion 33. As shown inFigs. 1(a) and 1(b) , thepierced rod 50 includes ahead 51 having a convex curved surface and capable of pushing theclaw portion 27 uniformly over the entire circumference thereof, in the axial direction. Thepierced rod 50 further includes aneck portion 52 having a smaller diameter than the base of thehead 51 to define a circumferential groove in which theclaw portion 27 is engageable, and acylindrical trunk portion 53 extending from theneck portion 52 and having an outer diameter larger than the maximum inner diameter of thevalve hole 24. The interior of thepierced rod 50 is divided into one end portion of thewater supply line 40 and one end portion of theair intake line 70. Thetrunk portion 53 is formed with a rawwater intake port 41 through which raw water in thecontainer body 21 is introduced into thewater supply line 40. Thepierced rod 50 is further formed with an air hole (not shown) through which air in theair intake line 70 is introduced into thecontainer body 21. - A through
hole 54 is formed in thehead 51 so as to communicate with thewater supply line 40 in thepierced rod 50. The throughhole 54 opens at the apex of thehead 51. - As shown in
Fig. 2 , thewater supply line 40 includes a connectingpipe 42 having one end thereof connected to the portion of thewater supply line 40 in thepierced rod 50. Similarly, theair intake line 70 includes a connectingpipe 71 having one end thereof connected to the portion of theair intake line 70 in thepierced rod 50. The connectingpipes pump 43 for drawing up water is provided at an intermediate portion of thewater supply line 40. Theair intake line 70 always communicates with the atmosphere through anair chamber 72 and with the interior of thecontainer body 21 so that air can be introduced into thecontainer body 21 through theair intake line 70. After thecontainer body 21 has been collapsed until it cannot be collapsed any further, as the water remaining in thecontainer body 21 decreases, air is sucked into thecontainer body 21 through the portion of theair intake line 70 shown inFigs. 1(a) and 1(b) to prevent negative pressure in thecontainer body 21. Theair chamber 72 is preferably provided with a filter for removing contaminants in the atmosphere, such as dust, odor and bacteria. - In order to connect a new
raw water container 20 to thewater supply line 40 of the water dispenser, as shown inFigs. 3 and6 , while being positioned upside down, theraw water container 20 is lowered into the space surrounded by theenclosure portion 33. While the container is being lowered and before the shoulder portion of thecontainer body 21 contacts the seatingsurface forming portion 31, theenclosure portion 33 guides the peripheral wall portion of thecontainer body 21 so as to move theraw water container 20 to a position in the air where thepierced rod 50 can be inserted into thevalve hole 24 in the axial direction. When thehead 51 contacts theclaw portion 27, as shown inFig. 1(a) , thetrunk portion 53 is partially fitted to the large-diameter innerperipheral portion 24b of thevalve hole 24, and thehead 51 is inserted, to its axially intermediate portion, into theperipheral wall portion 26. When theraw water container 20 is further lowered, thepierced rod 50 is further deeply and axially inserted into thecontainer 20 with thepierced rod 50 and the innerperipheral portion 24b axially moved and guided relative to each other. This causes theclaw portion 27 to be pushed in the axial direction by thehead 51 of thepierced rod 50 over the entire circumference of theclaw portion 27. Due to a tapered engaging surface of theclaw portion 27 and the convex curved surface of thehead 51, when theclaw portion 27 is pushed by thehead 51 in the axial direction, theclaw portion 27 is also pushed radially outwardly. This causes elastic deformation of theclaw portion 27 such that its portion near the edge of the tapered engaging surface is slightly deflected in the axial direction, and also causes, as shown inFig. 1(b) , elastic deformation of the tubular protruding wall of theplug body 23 having the inner periphery defining thevalve hole 24 such that the tubular protruding wall is radially outwardly inclined to such an extent that the outerperipheral portion 26a of theperipheral wall portion 26 remains caught on the small-diameter innerperipheral portion 24a of thevalve hole 24. Due to these elastic deformations, thehead 51 can slip past theclaw portion 27. When thehead 51 clears theclaw portion 27, theclaw portion 27 is engaged in theneck portion 52 due to its elastic recovery, thus getting caught on thehead 51 in the axial direction over the entire circumference of thereof, as shown in the circle ofFig. 5 . In this state, theclaw portion 27 securely tightens thehead 51 in the radial direction over the entire circumference of thehead 51. - After the
claw portion 27 gets caught on thehead 51 and before the shoulder portion of thecontainer body 21 is seated on the seatingsurface forming portion 31 as shown inFig. 5 , theperipheral wall portion 26 is continuously pressed by the shoulder of thetrunk portion 53 in the axial direction. Since the stepped surfaces where the innerperipheral portion 24a and the outerperipheral portion 26a are caught on each other are slightly inclined, when theperipheral wall portion 26 is pressed by the shoulder of thetrunk portion 53 in the axial direction, the innerperipheral portion 24a is also pushed radially outwardly by the outerperipheral portion 26a, whereby the outerperipheral portion 26a disengages from the inner peripheral portion. Then, with the innerperipheral portion 24a kept in close contact with thetrunk portion 53 instead of with the outerperipheral portion 26a, the shoulder of thetrunk portion 53 keeps pressing thevalve body 25 in the axial direction, thereby disconnecting thevalve body 25 from theplug body 23, until the rawwater intake port 41 is moved into thecontainer body 21. - It is considered that the
raw water container 20 has become practically empty when the water level in thecontainer body 21 decreases to a level lower than the rawwater intake port 41. That is, when theraw water container 20 becomes practically empty, a small amount of water still remains in the container. When the practically emptyraw water container 20 is raised, and thepierced rod 50 is pulled out of theplug body 23, since theclaw portion 27 remains caught on thehead 51, theperipheral wall portion 26 of thevalve body 25 is fitted, taking the place of thetrunk portion 53, into the innerperipheral portion 24a while radially expanding the innerperipheral portion 24a with the outerperipheral portion 26a . When the container is further raised after theflange portion 28 has axially engaged the open edge of thevalve hole 24 facing the interior of the container, thevalve body 25 is disconnected from the piercedrod 50 as shown inFig. 6 . Thus, when thepierced rod 50 is pulled out of theplug body 23, thevalve hole 24 is spontaneously closed by thevalve body 25, so that it is possible to automatically prevent leakage of water remaining in theraw water container 20 simply by raising the container. - As described above, the water level in the
water supply line 40 is below the rawwater intake port 41 before a newraw water container 20 is connected to thewater supply line 40, so that the rawwater intake port 41, which is formed in thetrunk portion 53, is located outside of theraw water container 20 and communicates with the ambient atmosphere while thehead 51 is sliding on theclaw portion 27. During this period, since atmospheric air in the space defined by theperipheral wall portion 26 can hardly be released into the atmosphere through a gap between theclaw portion 27 and thehead 51, atmospheric air in the space defined by theperipheral wall portion 26 is released through the throughhole 54 into the portion of thewater supply line 40 disposed in thepierced rod 50, thus expelling atmospheric air in thewater supply line 40 into the atmosphere through the rawwater intake port 41, as shown by the arrows inFig. 1(b) . Thus, in this water dispenser, when a newraw water container 20 is connected to thewater supply line 40, more specifically, when thehead 51 is pushing theclaw portion 27, thehead 51 can be pushed in while allowing atmospheric air in the space defined by theperipheral wall portion 26 to be released into thepierced rod 50 through the throughhole 54, and thus without substantially compressing atmospheric air in the space defined by theperipheral wall portion 26. This makes it easier to hook theclaw portion 27 on thehead 51. - In order to allow atmospheric air in the space defined by the
peripheral wall portion 26 to be released into thepierced rod 50, the throughhole 54 may be open not at the apex, i.e. the distal end, of thehead 51, but at any portion of its surface closer to the distal end of thehead 51 than is the portion of thehead 51 which contacts and pushes theclaw portion 27 in the axial direction, namely, at any portion of its surface located at a higher level, inFig. 1(a) , than the contact portion between thehead 51 and theclaw portion 27. The present invention is not limited to the above-described embodiment but encompasses every modification thereof which is within the scope of the claims. For example, the present invention encompasses an arrangement in which the pierced rod is movable as inPatent document 2, and a water dispenser in which the raw water container is placed on a container holder fixed in position at the upper portion of the housing so that water is supplied through the water supply line under gravity, as disclosed inPatent document 1. -
- 10.
- Temporary water storage tank
- 20.
- Raw water container
- 21.
- Container body
- 22.
- Plug
- 23.
- Plug body
- 24.
- Valve hole
- 25.
- Valve body
- 26.
- Peripheral wall portion
- 27.
- Claw portion
- 30.
- Container holder
- 40.
- Water supply line
- 41.
- Raw water intake port
- 50.
- Pierced rod
- 51.
- Head
- 54.
- Through hole
- 100.
- Casing
Claims (1)
- A water dispenser comprising a casing, a temporary water storage tank (10) provided in the casing, a container holder (30) provided in the casing and on which a replaceable raw water container (20) can be placed, a water supply line (40) provided in the casing and through which raw water can be supplied from the raw water container (20) into the temporary water storage tank (10), and a pierced rod (50) provided in the casing and formed with a raw water intake port (41) through which raw water can be fed into the raw water supply line (40),
wherein the raw water container (20) comprises a container body (21) and a plug (22), the plug (22) comprising a plug body (23) fixed to the container body (21) and formed with a valve hole (24), and a valve body (25) capable of closing the valve hole (24),
wherein the valve body (25) includes a peripheral wall portion (26) configured to be press-fitted into an inner periphery of the valve hole (24), and a claw portion (27) protruding from the peripheral wall portion (26) over an entire circumference of the peripheral wall portion (26),
wherein the pierced rod (50) has a head (51), and
wherein the water dispenser is configured: such that when the head (51) is pushed into the plug body (23), the head (51) pushes the claw portion (27) of the valve body (25) over an entire circumference of the claw portion (27) until the claw portion (27) gets caught on the head (51) over the entire circumference of the claw portion (27), and thereafter, the pierced rod (50) is brought into close contact with the inner periphery of the valve hole (24) while pushing the valve body (25) out of the valve hole (24) until the valve body (25) is separated from the plug body (23); and such that when the pierced rod (50) is pulled out of the plug body (23), the peripheral wall portion (26) is fitted into the inner periphery of the valve hole (24) while the pierced rod (50) is pulled out of the valve hole (24) until the valve body (25) gets caught on the plug body (23), and thereafter, the valve body (25) is separated from the pierced rod (50),
characterized in that a through hole (54) is formed in a portion of the head (51) closer to a distal end of the head (51) than is a portion of the head (51) configured to contact and push the claw portion (27) such that atmospheric air in a space defined by the peripheral wall portion (26) is released into the pierced rod (50) through the through hole (54).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012232772A JP5529234B2 (en) | 2012-10-22 | 2012-10-22 | Water server |
PCT/JP2013/075835 WO2014065065A1 (en) | 2012-10-22 | 2013-09-25 | Water server |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2910519A1 true EP2910519A1 (en) | 2015-08-26 |
EP2910519A4 EP2910519A4 (en) | 2016-04-06 |
Family
ID=50544445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13849608.8A Withdrawn EP2910519A4 (en) | 2012-10-22 | 2013-09-25 | Water server |
Country Status (7)
Country | Link |
---|---|
US (1) | US20150266714A1 (en) |
EP (1) | EP2910519A4 (en) |
JP (1) | JP5529234B2 (en) |
KR (1) | KR20150073998A (en) |
CN (1) | CN104755412A (en) |
TW (1) | TW201429858A (en) |
WO (1) | WO2014065065A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3436395A1 (en) * | 2016-04-01 | 2019-02-06 | TRUE KEG S.r.l. | A system for dispensing water, and water container to be used in such system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5273083A (en) * | 1991-10-07 | 1993-12-28 | Ebtech, Inc. | Bottle cap and valve assembly for a bottled water station |
US5370270A (en) * | 1991-10-08 | 1994-12-06 | Portola Packaging, Inc. | Non-spill bottle cap used with water dispensers |
US5868281A (en) * | 1995-05-15 | 1999-02-09 | Portola Packaging, Inc. | Non-spill bottle cap |
FR2732003B1 (en) * | 1995-03-20 | 1997-06-06 | Mistral Distribution | FOUNTAIN BEVERAGE DISTRIBUTOR |
NL1006636C2 (en) * | 1997-07-21 | 1999-01-25 | Itsac Nv | Connection assembly for a fluid connection. |
US6193113B1 (en) * | 1999-04-21 | 2001-02-27 | Douglas J. Hidding | Dispensing system with fluted probe and valved closure |
BRPI0405365B1 (en) * | 2004-11-29 | 2012-05-29 | Reusable set for bottling, distribution and consumption of mineral water. | |
GB2429452A (en) * | 2005-08-27 | 2007-02-28 | Ebac Ltd | Bottle cap and valve assembly for a bottled water station |
JP4317262B1 (en) | 2009-03-30 | 2009-08-19 | 株式会社コスモライフ | Beverage dispenser |
US20100252570A1 (en) * | 2009-04-01 | 2010-10-07 | Yui George M | Bottom loading water cooler |
JP2011235905A (en) * | 2010-05-06 | 2011-11-24 | Sakagami Kogyo Kk | Floating prevention device for synthetic resin bottle in drinking water dispenser |
JP4802299B1 (en) | 2011-04-12 | 2011-10-26 | 株式会社オーケンウォーター | Water server for easy replacement of water bottles |
-
2012
- 2012-10-22 JP JP2012232772A patent/JP5529234B2/en active Active
-
2013
- 2013-09-25 CN CN201380055307.5A patent/CN104755412A/en active Pending
- 2013-09-25 WO PCT/JP2013/075835 patent/WO2014065065A1/en active Application Filing
- 2013-09-25 KR KR1020157010285A patent/KR20150073998A/en not_active Application Discontinuation
- 2013-09-25 US US14/435,477 patent/US20150266714A1/en not_active Abandoned
- 2013-09-25 EP EP13849608.8A patent/EP2910519A4/en not_active Withdrawn
- 2013-10-17 TW TW102137574A patent/TW201429858A/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2014065065A1 (en) | 2014-05-01 |
US20150266714A1 (en) | 2015-09-24 |
CN104755412A (en) | 2015-07-01 |
JP5529234B2 (en) | 2014-06-25 |
EP2910519A4 (en) | 2016-04-06 |
JP2014084125A (en) | 2014-05-12 |
TW201429858A (en) | 2014-08-01 |
KR20150073998A (en) | 2015-07-01 |
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